Q. A problem of combustion initiation before the spark plug fire is called

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Q. Most organic compounds are soluble in

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Q. Better quality gasoline with high octane numbers are prepared from the method

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Q. Tetraethyl lead causes disease

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Q. In the presence of high temperature and pressure, peat is converted to

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Q. Orbital hybridization explains the concept of Valency

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Q. Attock Oil Refinery has capacity (in million tones)

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Q. Source of organic compounds primarily is

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Q. All are organic compounds except

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Q. Coal is used to bake bricks in lime kiln

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Q. The process in which compounds having same molecular formula but different structural formula is called

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Q. Fractional distillation of petroleum yields of gasoline

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Q. A mixture of low boiling hydrocarbons is

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Q. The compounds in which ring consist of atoms of more than one kind of atom are called

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Q. Coal, petroleum and methane are examples of

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Q. Orbitals have same energy, symmetry and shape

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Q. Isomers of butane are

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Q. The percentage of 's' and 'p' in sp3 is respectively

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Q. An efficient antiknock agent is

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Q. Elements at the top right of periodic table are

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